1.

図書
図書
1. Catalogue of 4,810 stars for the epoch 1850 : from observations made at the Royal observatory, Cape of Good Hope, during the years 1849 to 1852
under the direction of Sir Thomas Maclear ; reduced and published under the direction of David Gill
出版情報: [London : Printed by Eyre and Spottiswoode, for H.M. Stationery off., 1884]
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2.

図書
図書
2. Gravitation : an elementary explanation of the principal perturbations in the solar system. 2. ed
by George Biddell Airy
出版情報: London : Macmillan, 1884
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